Networking is the art of connecting two or more devices together so that they can communicate with each other.

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My virtual machine is not connecting to the virtual network on hyper-v

I have created a virtual network on my host machine, verified that it is working properly, and added it as a network adapter for my virtual machine. But when I lunch the virtual machine, all it says ...
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1answer
20 views

CentOS 7 VirtualBox no internet access

I am having trouble connecting my CentOS 7 guest to the internet. My VirtualBox Network configuration is as follows: Adapter 1: NAT; Adapter 2: Host-Only (vboxnet0) vboxnet0 is connected set up ...
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13 views

Configure device remotely over ethernet [closed]

I have a device with Ethernet port I have to configure it remotely. In the remote city there is only wired internet so is it possible to configure that device by using wired internet through team ...
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0answers
16 views

Windows 8.1 | Make remote network locations available offline

I've set up a NAS on my network, and would like to make some of the files accessible offline on my laptop. I can do this by mapping a network drive to \\NASNAME\share, and then right-clicking to ...
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0answers
71 views

MacBook Pro retina 2013 with Yosemite 10.10.3: Severe Wi-Fi issues only on main account

In the last few weeks my MacBook Pro has developed increasingly severe Wi-Fi problems. At first it would drop connection every 10 minutes or so, but now it cannot find a network at all. In fact, the ...
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0answers
14 views

SCP connections mysteriously drop; too many connections?

I am running OpenSSH via Cygwin on a Windows 2008 server. This system acts as a file server for a pool of 30 build systems. At build time, each build system copies files as necessary from the file ...
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2answers
62 views

Why is my connection only 100Mbps?

We recently have installed Cat6 cabling in our walls using Cat5e jacks (Could not find any other type). From research, this seems to be a working method, however the connection is auto-negotiated by ...
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1answer
4 views

what would be the benefit of adding a dns server to isc-dhcp-server

I have a very simple networking setup. I have a couple server applications like plexmediaserver, transmission-daemon, samba, etc... My router just went down, so instead of buying a new router, I just ...
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1answer
13 views

what is ddns-update-style in isc-dhcp-server on ubuntu

I have a ubuntu server setup as a router (among other things), I now am adding a dhcp server to it. When configuring isc-dhcp-server, the /etc/dhcp/dhcpd.conf file has an option called ...
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1answer
23 views

Cannot connect to certain sites after moving computer

I recently moved my computer to a new location in town. We have the same ISP, Eastlink, but new cable modem, and new switch. I am connecting via Ethernet, but the effect is the same on Wi-Fi. I have ...
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13 views

Network connection degrades after a while

My topology is as follows: Fiber -> Modem --[PPPoE]--> WiFi Router --[Cable]--> Win Computer A | `-------[Cable]--> Mac ...
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36 views

Private VLAN on single port [migrated]

I am trying to separate a group of computers (5 to be exact) from an entire network, but they still need to login from ad dc. Those computers are on a different floor, they have static IPs, and they ...
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0answers
13 views

Openvpn connects but can't ping server

I'm on Ubuntu 14.04. I used to connect to corporate openvpn network from command line by running: sudo openvpn --config client.ovpn This is what client.ovpn looks like: client dev tun proto tcp ...
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0answers
12 views

Unable to connect server through winSCP and its giving access denied error

Even though by providing correct username and password it's not allowing to connect to server. I turned off firewalls also in server. But, still not able to access FTP connection. I also checked that, ...
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1answer
39 views

a network gateway that modifies content - how to do it?

I'd like to set up a network gateway that will modify on the fly the code of webpages accessed by users on my LAN. For instance, I'd like to automatically remove ads, suspicious object or iframe tags. ...
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3answers
39 views

How do clients identify the router on a network?

How do clients connected to a LAN network with a NAT router connecting the network to the internet, identify the NAT router and hence know where to send their traffic for the wider internet. If this ...
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1answer
11 views

port forward in INPUT level

I want to change the destination port of the ipv6 packet in the INPUT level. So I tried to use ip6tables with nat in the INPUT level but seems this command does not work # ip6tables -t nat -I INPUT ...
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0answers
16 views

Use Ubuntu Iptable to route public ip to pc in private network

I am currently set up a Ubuntu server as a Router which has two network interface. eth0 -> Connecting to public internet ( 10.10.1.78 ) eth0:1 -> 10.10.1.79 eth0:2 -> 10.10.1.83 eth0:3 -> 10.10.1.81 ...
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1answer
31 views

How to disable routing all traffic (including web-traffic) through the VPN in client's .ovpn config file?

In order to connect to corporate network I've got these four files ca.crt client.ovpn client.key client.crt I couldn't create VPN connection via Ubuntu GUI, but I managed to get it work from ...
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14 views

How to access IIS website from another computer in the same domain?

I can able to access FTP site from another computer in the same domain. I installed telnet & other required features on my client PC as well. Website is working in the server. But How to type ...
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3answers
45 views

Where can I find the definition of “eth0” in my Ubuntu 14.04 OS?

I cannot find the definition of eth0 in either /etc/network/interfaces or /etc/NetworkManager/NetworkManager.conf, but eth0 works perfectly. So who can tell me in which configuration file I can find ...
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25 views

Restrain user from updating their Phone application via Office WiFi [closed]

Is there a way to stop users from updating their phones when they connect to the office's WiFi. Being unable to tell which MAC address belongs to which person, and only able to block up to 8 MAC ...
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1answer
26 views

Private host with static ip on VMware

I have an Ubuntu virtual machine that I run on my Windows 7 laptop with VMware player 7.1.0. Here is the setup: Virtual Machine Settings > Network connection : Bridged. Settings of the Ubuntu ...
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0answers
13 views

Can't forward ssh port properly on fritzbox 6490

I tried to forward port 8022 to port 22 on my raspberry pi in my fritzbox 6490. Therefore I added the port forwarding rule for udp as well as for tcp. My problem is, I keep getting a timeout error ...
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0answers
12 views

home network bridge + access point

I want to create a wired bridge to a wifi setup a firewall + intrusion detection and then setup a wifi-access point for lan-out I currently have a d-link 1200 extender setup as bridge, my desktop ...
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29 views

Forward NTP from one network to another network connected to the Internet on Windows 7

I have NVR server which is running Windows 7 with 2 network interfaces. There is one network dedicated for IP Cameras - 192.168.254/24. Second NIC connected to my network with internet access ...
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3answers
51 views

Static IP without a static IP

I need my network to have an external facing IP address that is static. My ISP will not provide me with one. I know I can use use DDNS to achieve this in a way. I want to setup an Exchange server ...
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2answers
31 views

See real IP through HTTP Proxy

I'm setting a HTTP Proxy in a Java Application. In that application I test wether the proxy is working by querying http://api.ipify.org/. However, I get my real IP address back instead of the one of ...
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0answers
22 views

LAN disconnects, brought new LAN card but old one comes back [duplicate]

So here is the story, the old LAN port came with the motherboard and after installing windows 8.1 (from windows 7) the LAN would drop in about 30 mins of a restart and never connect again. I thought ...
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0answers
14 views

Explanation about at0 and eth0?

I know that eth0 is the local network (OR wired network) but what's the at0 and why we can't use iptables (FORWARDING) on it or in other term what's the difference exactly between them (what's the ...
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0answers
4 views

How to specify txpower in hostapd configuration file

I'm not able to specify the txpower in hostapd config file, I couldn't find the config parameter that can set the txpower (in dBm for example). Also I would like that my manual hostapd configuration ...
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0answers
13 views

vnstat: Statistics of two connected OpenVPN-interfaces differ

I have two servers connected over an OpenVPN tunnel. The tunnel is a 1-to-1 tunnel with fixed IPs, so there should be no one else talking over the same tunnel interfaces than these servers. Some days ...
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0answers
14 views

Wi-Fi connection does not appear on list of available connections [duplicate]

I am using Windows 7. My Wi-fi connection used to appear on the list of available connections. It has now disappeared. I can connect to other Wi-Fi connections with no problem and can connect to my ...
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0answers
22 views

What factors limit the number of sessions a router can handle?

We have had a number of problems recently with our office connection. Unfortunately FTTC is not available in the area, so we have two ADSL connections load balanced via a Draytek 2860Vn+. I have had ...
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0answers
23 views

My PC loses Internet connection from time to time for 30 seconds

When I play games, from time to time I lose Internet connection for about 30 seconds, I check with my browser and it doesn't load pages also. I thought this might be because I'm using a dumb setup at ...
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1answer
22 views

what the “!” means in the iptable rule

what the "!" means in the following iptable rule iptables -I inacc ! -i br0 -p UDP --dport 69 -j ACCEPT I think is related to the interface br0. I think it mean any interface except the br0 Am I ...
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1answer
36 views

How to use 2.4 GHz and 5 GHz at the same time

I have the following setup: 1x TP-Link Archer C7 (with to Accesspoints "AC24" on 2.4 GHz and "AC5" on 5 GHz) 1x Notebook with 2 Wifi-Adapters (TP-Link Stick connected to "AC5" and Intel N 7260 ...
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1answer
36 views

What is creating the utun0 network interface on OSX? What is for? What is it exactly?

What is creating the utun0 network interface on OSX? What is it being used for? What is it exactly? The interface only appears after connecting to the Ethernet or turning on the Wi-Fi and goes away ...
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0answers
26 views

How to connect to a wireless network with different domain credentials

I've recently purchased a new computer, and I'm using it for work. The only issue is the username/password combo I'm logged in with is different to my domain credentials in the office. Now I've ...
0
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1answer
26 views

renaming network interface with systemd

I want to rename on Fedora 22 a network interface managed by systemd-networkd (version 219) from the system-assigned name enp2s0 into wan. For that I created the following file ...
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2answers
41 views

How to connect two computers wirelessly

I want to connect my Raspberry on which I installed archlinux arm, wirelessly to my computer. With this connection I want to stream a live video from the Raspberry Pi. Raspberry<------Wireless ...
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1answer
9 views

Port restrictions and MACs

I have a question regarding connections within a university setting. In my room I have two network points. One for my pc and one for my voip phone. Each network port is restricted to one mac address, ...
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0answers
10 views

X11 forwarding over two hops using socat

I have following topology: PC1 <----> (PUBLIC-IP) dom0 (192.168.1.254) <----> (192.168.1.55) domU I want to start GUI application on domU and display it on PC1. For this purpose ...
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1answer
33 views

Why did the naming convention of network interfaces change in linux?

I recall not too long ago, interfaces were identified by eth0, eth1, wlan0, etc. Now I'm finding interface names like enp0s3, enp0s8, etc. In another question I asked here only moments ago, someone ...
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2answers
38 views

In Virtual Box, how do you know which NIC is which from the linux command line?

I've run into a problem a few times now where I'm installing linux in a virtual machine, and all of my interfaces look like "enp0s3" or "enp0s8" ect. In one test, I was running a VM with 4 virtual ...
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1answer
20 views

Network shuts down when downloading large file through 5 GHz network

My router runs 2 networks. A 5 GHz network for newer devices, and a 2.4 GHz network for older devices. When I am downloading a large file and/or have a lot going on, if I am connected to the 5 GHz ...
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2answers
43 views

OS-X localhost resolving strangely

The issue I'm about to describe I see only when I run some Java unit tests. However, I'm pretty sure that the cause is OS-X configuration, not Java, so I'm posting to superuser not StackOverflow. We ...
1
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1answer
23 views

Windows Server 2012 Standard - Can ping google.com, but cannot access on Firefox

I have a Win Server 2012 Standard that I'm replacing a Win Server 2003 R2 Standard. After migrating Active Directory and DNS over to the 2012 server and making it the Global Catalog DC. I can ping ...
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2answers
24 views

How to share a drive with a network in Windows 7

How can I share a drive with my network, so that I can access the drive form my mobile (any device) which is connected to the same network (same wireless modem). I did try it once and when I tried ...
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4answers
80 views

Point of subnets

This page gives two options for if you have more than 254 hosts, get another IP range or use subnets. But if you've got an IP address range which lets you have more than 254 hosts, why not just keep ...